package com.bruce.principle.singleresponsibility.demo2;

/**
 * Created by bruce on 2018/10/23 21:40
 */
public class CourseImpl implements ICourseContent ,ICourseManager {
    @Override
    public String getCourseName() {
        return null;
    }

    @Override
    public byte[] getCourseVideo() {
        return new byte[0];
    }

    @Override
    public void studyCourse() {

    }

    @Override
    public void refundCourse() {

    }
}
